/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebEngine module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** General Public License version 3 as published by the Free Software
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
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****************************************************************************/

#include "qtwebengineglobal.h"
#include <QCoreApplication>

namespace QtWebEngineCore
{
    extern void initialize();
}

QT_BEGIN_NAMESPACE

namespace QtWebEngine {

/*!
    \namespace QtWebEngine
    \inmodule QtWebEngine
    \ingroup qtwebengine-namespaces
    \keyword QtWebEngine Namespace

    \brief Helper functions for the \QWE (Qt Quick) module.

    The \l[CPP]{QtWebEngine} namespace is part of the \QWE module.
*/

/*!
    \fn QtWebEngine::initialize()

    Sets up an OpenGL Context that can be shared between threads. This has to be done before
    QGuiApplication is created and before window's QPlatformOpenGLContext is created.

    This has the same effect as setting the Qt::AA_ShareOpenGLContexts
    attribute with QCoreApplication::setAttribute before constructing
    QGuiApplication.
*/
void initialize()
{
     QCoreApplication *app = QCoreApplication::instance();
     if (app) {
        qWarning("QtWebEngine::initialize() called with QCoreApplication object already created and should be call before. "\
                 "This is depreciated and may fail in the future.");
        QtWebEngineCore::initialize();
        return;
     }
     // call initialize the same way as widgets do
     qAddPreRoutine(QtWebEngineCore::initialize);
}
} // namespace QtWebEngine

QT_END_NAMESPACE
